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Kazeer [188]
3 years ago
12

Why does every plant cell have a nucleus

Chemistry
2 answers:
Phantasy [73]3 years ago
7 0
Plant cells are eukaryotic cells and they all have a nucleus and DNA is stored in the nucleus and copied during replication.
Lena [83]3 years ago
3 0
Every plant cell has a nucleus because a nucleus controls the cell's main <span>activities.</span>
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When C2H6(g) reacts with O2(g) according to the following reaction, 1.43×103 kJ of energy are evolved for each mole of C2H6(g) t
dezoksy [38]

Answer:

-2.86x10³ kJ

Explanation:

The enthalpy of a reaction (ΔH) is defined as the heat produced or consumed by a reaction. In the reaction:

2 C₂H₆(g) + 7 O₂(g) → 4 CO₂(g) + 6 H₂O(g)

The ΔH is the heat envolved in the reaction per 2 moles of C₂H₆. 1.43x10³ kJ are involved when 1 mole reacts. Thus, when 2 moles react, involved heat is:

1.43x10³ kJ ₓ 2 = <em>2.86x10³ kJ</em>. As the reaction is a combustion reaction (Produce CO₂ and H₂O), the heat involved in the reaction is <em>PRODUCED, </em>that means ΔH is negative, <em>-2.86x10³ kJ</em>

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3 years ago
2. The Density of Water is 1.0000g/cm3. Based on this property of water,
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Answer:

if the object sank then that object has a greater density then water. if the object floated then its density is lower then water.

Explanation:

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e-lub [12.9K]

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A. 2.45 L - Answer my answers is right.

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Use the information and table to answer the following question.
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Explanation:

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